The industry is a bit slow at the moment so the girls should remember that if they are slower than usual then so is everyone else probably.
The thing to keep in mind with the SEX industry is that it is discretionary spending and one of the first to slow down when the economy slows down. If a man has not got the spare cash he will see Mrs palmer because she is the cheapest sexual gratification he can get.
For the girls:- if you look after the men when times are good then you will still have clients when times are bad. If you notice all your clients are new, then you are doing something wrong and should try and find out what it is and fix it. A worker does not have to be good looking to keep returning clients (but it helps to get them the first time) if she does everything else well then he will come back again.